by a head的用法和樣例：
例句
用作副詞 (adv.)
- The mare was beaten for a place by a short head.
那匹母馬以不到一頭之差屈居第二名。 - It usually suggests that the head is low.
此字通常含有垂頭之意。
詞匯搭配
- win by a head 以一頸之差得勝(以微...
- by a short head 一頭之差(相距極近)...
